Mitsuyoshi Matsushita

Title: The Innovative Contributions of Mitsuyoshi Matsushita

Introduction

Mitsuyoshi Matsushita, an esteemed inventor located in Chiba, Japan, has made significant strides in the field of piezoelectric materials. With a total of eight patents to his name, Matsushita's work significantly enhances the performance and efficiency of piezoelectric devices.

Latest Patents

Matsushita's latest innovations include a patent for a "Piezoelectric single crystal ingot, producing method therefor and piezoelectric single crystal device." This invention outlines a method for producing a piezoelectric single crystal ingot via the Bridgman method, incorporating a relaxor with a composition of Pb(Mg, Nb)O and lead titanate with a composition of PbTiO. Notably, the lead titanate's compositional fraction is managed to ensure it does not vary monotonically along the growth direction, maintaining variation within ±2.0 mole percent over a length of 30 mm or more. Furthermore, his piezoelectric single crystal device demonstrates superior electromechanical performance, achieving a coupling factor of 65% or more, which surpasses the existing flat plane type devices.

Career Highlights

Throughout his career, Matsushita has been associated with prominent companies, including JFE Mineral Company, Ltd. and Kawatetsu Mining Co., Ltd. His dedication to innovation in piezoelectric technology has positioned him as a key figure within the field.

Collaborations

Matsushita has collaborated with notable peers, including Yosuke Iwasaki and Toshio Ogawa. These collaborations highlight the collective effort within the research community to push the boundaries of piezoelectric applications.

Conclusion

Mitsuyoshi Matsushita’s contributions to the field of piezoelectric materials and devices are profound and noteworthy. His innovative spirit, encapsulated in his patents, not only advances technology but also inspires future inventors and researchers to explore the potential of piezoelectric systems.